Method of and apparatus for controlling water on a fourdrinier wire



F. W. MONAGHAN. METHOD AND APPARATUS FOR CONTROLLING WATER ON A FQURDRINIER WERE.

APPLICATION FILED AUG. I6| I919.

Patented Jams 25, 1921c UNITED STATES PATENT OFFICE.

FRANK W. MONAGHAN, OF MOSINEE, WISCONSIN, ASSIGNOR TO THE BAGLEY AND SEWALL COMPANY, OF WATERTOWN, NEW YORK. A CORPORATION OF NEW YORK.

METHOD OF AND APPARATUS FOR CONTROLLING WATER ON A FOURDRINIER WIRE.

Application filed August 16, 1919.

To all whom it may concern:

Be it known that I, FRANK W. MONAGHAN, a citizen of the United States, residing at Mosinee, county of Marathon, and State of Wisconsin, have invented certain new and useful Improvements in Methods of and- Apparatus for Controlling ater on F ourdrinier Wires, fully described and represented in the following specification and the accompa-nying drawings, forming a part of the same.

This invention relates to certain improvements in a method of and apparatus for controlling the water content of the paper pulp on the wire section of a Fourdrinier paper making machine.

In the manufacture of paper on a Fourdrinier machine, the pulped stock, which is to be made into paper, is fed to the wire section of the machine in the form of pulp, with water. This pulp mixed with water is allowedto flow on to the wire of the machine through a head box, over the apron to the slices and the necessary amount of water must be extracted from the pulp sheet as it passes over the Wire. This wire as is well understood in the art, is a continuous wire section of suitable mesh which is given a traveling movement and which passes during this movement over a series of rolls, known in the art as table rolls. Each of these table rolls when in contact with the wire extract some water from the pulp and water mixture upon the top of the wire. Different kinds and thicknesses of paper require a varying amount of water with the pulp sheet in order to make the sheet of paper desired, and it has been heretofore often necessary to add more water in order to form the required sheet of paper than can be taken out at the suction boxes which forces the machine to be slowed down in speed, so that the water can be taken care of, with a consequent loss in amount of production; and again it has been'often necessary in order that sufficient water in the sheet of pulp may carry to the suction boxes to treat the pulped stock in such a manner 'as to slow same which has a tendency to spoil same for certain varieties of paper and the object of the invention is to reasonably control the amount of water in the pulp sheet while lt is on the making wire to suit the variou? kinds and weights or thicknesses of paper to be made. i

The amount of water used with the pulp Specification of Letters Patent.

Patented Jan. 25, 1921.

Serial No. 317,881.

varies according to the character of the Web or sheet of paper to be produced. A light weight web requires more water in order to effect a proper formation than does a heavy We ght web, but the heavy weight web requires more rolls to get out the required amountof water owing to the fact that as the felting process proceeds the web becomes formed and the penetration of the water through the web is retarded. \Vith the light weight sheet on the other hand, as the felting process proceeds there is very small resistance to the passage of water, and where a wire section with the number of rolls suitable to produce a heavy weight web is employed, there is a tendency to take out the water too rapidly to produce the required web formation for a light weight web.

-In many instances when the condition of the pulped stock changes on the wire for some reason instead of adding more water to the paper or shutting off water, either of which will start lumps'running in'the stock and cause many breaks of the paper, this invention may be used and accomplish the same effect as adding water or shutting off water without the bad results following such methods, and will give an improved sheet of paper with less or no lumps and therefore with less breaks, and interruptions in the process of manufacture. And also in instances where mills have gone to the capacity of their water supply this invention will permit increased speed of production and produce a better closed web of paper.

It is the especial object of the present invention to effect a simple and accurate control of the water content of the pulp while on the wire section of a Fourdrinier ma chine, and to produce a simple and effective apparatus whereby this water control may be carried out, so that a light weight web can be made of a pulp with the usual and proper admixture of water or a heavy weight web with its usual and proper admixture of water can be produced on the same wire,

and it will be seen that the invention produces in one and the same wire part of given length of making wire, the effects that are now obtained from several Fourdrinier machines with varying lengths of wires, having for instance, long wires and a large number of contacting table rolls and also shorter 1.:

wires and a fewer number of contacting table rolls.

This method generally speaking consists in controlling the amount of water which may be taken or extracted from the pulp, while it is on the wire section of the machine,

and a simple, novel and efficient apparatus for effecting this method is shown in the accompanying drawings in which:

Figures 1 and 1 show diagrammatically so much of the wire section of a F ourdrinier machine as is necessary for an understanding of the invention, illustrating the means employed for varying the contact of the table rolls with the wire.

Fig. 2, is a side elevation, partly in section, on an enlarged scale of one set or nest of table rolls, all of the rolls being shown in contact with the wire.

Fig. 3 is a view similar to Fig. 2, showing certain of the rolls removed from contact with the wire to the position they occupy when the machine is operating to produce a light weight web, and

Fig. 4 is an end view partly in section, taken on line 4-4 of Fig. 2, illustrating the means for operating the rolls.

Referring now to the drawings, 1 indicates the feed box or tank containing the previously prepared stock in the form of pulp, and 2 a feed board over which the pulp is fed to the machine. The wire is indicated by W. This wire, as is usual, is continuously driven, passing over the breast roll 3, and the couch roll 1, this couch roll 4 being driven in any suitable manner, not shown. The wire on its return to the breast roll passes over guide rolls 5, and from the breast roll passes over a series of small free running rolls, marked generally 6, which are the table rolls. These rolls may, if desired, and as illustrated, be arranged in nests or sets, six such sets being illustrated. These rolls will, furthermore, be provided in the best constructions in numbers sufficient to properly produce the formation of the heaviest weight web which the machine will be r uired to produce.

r s the wire passes over these rolls, the rolls contact with the wire and act to extract water from the pulp carried on the wire. In

accordance with the object of the invention,

the extraction of the water during its passage on the wire is controlled by this invention so that a greater or less amount of water may be withdrawn from the pulp, dependmg on the character of the web to be formed.

While this may be effected in various ways, in the machine illustrated, means are provided whereby a relative movement of the table rolls to and from the wire may be effected so that at certain points the wire is out of contact with the rolls, whereby at these points as the rolls do not touch the wire no water will be extracted by them from the pulp. While this may be effected in various ways, in the particular construc provided whereby a rolls may be moved simultaneously. While 'ferred to.

tion illustrated, certain of the rolls are so mounted that they may be moved vertically to and from the wire, so as to be brought into and out of contact therewith. In the best construction, furthermore, means are plurality of the table the specific mechanism efiecting this move-' ment of the rolls may be widely varied, a a simple and convenient one is that illustrated.

While any of the rolls may be lifted or dropped from the wire, in the best construction, the first rolls next the breast roll and slice will not be movable but will be employed for taking out what water they can, no matter what the weight of the web to be made is. As shown, the first two nests of rolls are stationary. In the parts orsec-- tions of the roll train where the rolls are moved, in thebest constructions, arrangements are made to move every other roll of a set, and preferably such rolls of each set will be simultaneously raised or lowered. This construction is adopted. so that the water control may be'eifective at any point along the wire that may be desired. As shown, the stationary rolls 6 are mounted in bearings 7 carried on spindles or standards 8 supported from the side rails 9 of the machine, these standards being provided with shoulders 8 to hold the rolls in contact with the wire. The movable rolls 6' are likewise mounted in bearings 10, which are slidable on standards 11, also supported from the side rails 9, a shoulder 12 being provided to act as a stop for the roll when it is in its lowered position. The bearings 10 of the movable rolls 6 contact witha lifter in the form of a pin 13 slidable in a sleeve 1 1, supported so as to depend from the side rail 9, one of these lifter pins being provided for each movable roll. This sleeve below the lifter pin is slotted to receive a lifter bar 15, formed with a wedge surface 16, this bar being slidable through the slot and acting through the wedge face 16, to raise the lifter pinvand thus lift or drop the roll, the lifter pin when the rolls are in raised position, as shown in Fig. 2, contacting with the high part of the wedge. This wedge actuating bar is, in the best construc tions, provided wit-h a number of wedge surfaces 16, so that a plurality of the rolls may be lifted or depressed simultaneously. In the particular construction illustrated, the bar is provided with four such surfaces. This bar may be operated to actuate the lifters in various ways. In the particular construction illustrated, there is provided a stud 17, taking bearing in the bracketlS, secured in any suitable manner, as by bolts 19, to

the lower face of the side rails 9, before re- This stud at its outer end has an operating lever 20, and at its inner end an arm 21, to which is secured one end of a link 22, the other end of this link being pivoted to a bracket plate 23 fast on the actuator bar 15, before referred to. By operating the lever 20, the actuator bar is reciprocated and the rolls 6 raised or lowered, as desired. As shown,- the construction is duplicated on both sides of the machine, so that rolls may be raised evenly into contact with the wire.

Ihe actuator bar may be locked in desired position by any sitable means as by a pin 25 which may be inserted in holes 26 formed in the bar on each side of one of the sleeves 142.

It will thus be seen that an exceedingly simple and accurate method has been provided by the present invention through the use of which a very accurate control of the extraction of the water from the pulp on the li ourdrinier wire can be eflected, and a method which does away with varying stock solutions and so on, as heretofore t forth, thus permitting the formation or light and heavy weight webs from pulp prepared in the regular manner.

By the invention, furthermore, a very simple and eflective apparatus has been devised for carrying out such method.

It will be understood that certain changes and variations may be made in the mechanism for efiecting a relative movement of the rolls and wires, and that the invention is,

therefore, not to be restricted to the exact construction illustrated.

What is claimed is:

1. In a Fourdrinier wire section, the com bination with the wire, of the table rolls over which the wire runs, and means for effecting a relative movement between certain of the rolls and the wire to cause the wire to run out of contact with such rolls.

2. In a Fourdrinier wire section,'the combination with the wire, of the table rolls over which the wire runs, and means for raising and lowering certain of the rolls to cause them. to move into and out of contact with the wire.

3. In a Fourdrinier wire section, the combination with the wire, of the table rolls over which the wire runs, and means for simultaneously effecting a relative movement between a plurality of the rolls and the wire, to cause the wire to run out of contact with said rolls.

4. In a Fourdrinier wire section, the combination with the wire, of the table rolls ,cver which the wire runs, and means for simultaneously raising or lowering a plurality of the rolls'to cause them to move into and out of contact with the wire,

a 5. In a Fourdrinier wire section having stationary rolls and rolls movable vertically to and from the wire.

6. A. Fourdrinier wire section having table rolls arranged in sets and alternate rolls of certain sets movable to and from the wire.

7. A Fourdrinier wire section having table rolls arranged in sets and a plurality of rolls in a set simultaneously movable to and from the wire,

8. In a Fourdrinier wire section, the combination with the wire, of the table rolls over which the wire runs, means for mounting certain of said rolls to have a vertical up and down movement, said means including lifters and actuators for the lifters.

9. In a Fourdrinier wire section, the combination with the wire, of the table rolls over which the wire runs, means for moving certain of the rolls vertically up and down said means including lifters and an actuator for simultaneously actuating a plurality of the lifters.

10. In a Fourdrinier wire section, the conbination with the wire, of the table rolls over which the wire runs, lifters for certain of the rolls by which the rolls may be raised or lowered, and actuator bars having wedge surfaces for actuating the litters.

11. In a Fourdrinier wire section, the combination with the wire, of the table rolls over which the wire runs, lifters for certain of the rolls by which the rolls may be raised or lowered, and an actuator bar having a plurality of wedge surfaces for simultaneously actuating a plurality of the lifters.

12. In a Fourdrinier wire section, the combination with the wire, of water extracting means past which the wire runs and cooperating with the wire to remove water from the pulp, and means for efi'ecting a relative adjustment between the wire and the water extracting means to control or regulate the water content of the pulp while on the. wire.

13. In a Fourdrinier wire section, the combination with the wire, of water extract ing means past which the wire runs and cooperating with the wire to remove water from the pulp, and means for adjusting the water extracting means relatively to the wire to regulate the water content of the pulp while on the wire.

14. In the art of manufacturing paper, the improvement which consists in controlling and regulating the retained water content of the pulp while it is on the web-forming wire of the machine by relative adjustment of the wire and its cooperating water extracting devices.

In testimony whereof I have hereunto set my hand.

FRANK W. MONAGHAN. Witnesses:

H. C. Marnann, W. Ariana Bane. 

